Apparatus for controlling line pressure used in V-belt type cont

Details Apparatus for controlling line pressure used in V-belt type cont Apparatus for controlling line pressure used in V-belt type cont

1985-01-22

1987-06-02

Braun, Leslie

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

474 28, 74868, B60K 4112, B60K 4116

Patent

active

046693360

ABSTRACT:
A continuously variable transmission (CVT) has input and output pulleys interconnected by a V-belt. The output pulley is actuated by a line pressure. A throttle pressure is increased as the position of an intake throttle valve arranged in an intake path is increased. A transmission-ratio pressure is decreased as the position of the intake throttle valve is increased. The transmission-ratio pressure is decreased in the region of smaller openings of the intake throttle valve more gently than in the region of larger ones. The line pressure is produced in relation to the throttle pressure and the transmission-ratio pressure.

REFERENCES:
patent: 4161894 (1979-07-01), Giacosa
patent: 4462277 (1984-07-01), Miki et al.
patent: 4476746 (1984-10-01), Miki et al.
patent: 4522086 (1985-06-01), Haley
patent: 4533340 (1985-08-01), Abo et al.
patent: 4534243 (1985-08-01), Yokoyama et al.
patent: 4542665 (1985-09-01), Yamamuro et al.

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